Benjamin snydeb



raras einen..

BENJAMIN sNYDEnfoF NEW YORK, N. Y.

Specication of Letters Patent.

Application led April 14, 1916. Serial No. 91,051.

To alliuiltom it may concern.'

Be it known that I, BENJAMIN SNYDER,

'4 a citizen of the United States, and a resident ofthe city of NewYork, borough of Manhattan, in the county and State of New York, haveinvented a new and Improved Permutation-Padlock, of which the followingis a full, clear, and eXact description.

The object of the invention is to provide a new and improved permutationpadlock which is very simple and durable in construction, cheap tomanufacture and arranged to provide a -double safeguard against openingthel padlock by unauthorized'persons.

In order to accomplish the desired result, use is made of aframeprovided with spaced slotted sleeves, a shackle provided on itslegs with lugs and adapted to be passed intoA the sleeveswith the lugslprojecting through ed' to rotate' on'each sleeve one above theother-andeach having twoconcentric bores I vof which the larger bore isengaged by the projecting end of the corresponding lug and the smallerbore 'is provided in its wall with afgroove adapted to register with thelugs and thevslot in the corresponding sleeve.

v A practical embodiment of the invention 30.

is represented in the accompanying drawings formlng a part of thisspecification, 1n which similar characters of reference 1nd1- catecorresponding parts in all the views.

Figure 1 is a side elevation of the permutation padlock; Fig; 2 is asectional side elevation of the same on the line 2-2 of Fig..

3; Fig. 3 is a cross section of the same on the line 3 3 of Fig. 1; Fig.4 is a sectional plan view of the same on the line4-4 of Fig. 1; Fig. 5is a perspective view of one of the sleeves; Fig. 6 is a similar view ofone of the tumblers; Fig. 7 is a plan view of the top plate of theframe; and Fig. 8 is a similar view of the blank for forming the baseand the sidesof the frame.

The base 10 of the lock frame is provided with integral posts 11fastened at their upper ends by openings 12 formed in a top plate 13,thus holding the latter spaced from the base 10 and parallel thereto..In the base 10 and the top plate 13 are secured `sleeves 14 and 15,each provided at the lower and upper end with attaching members 16 and17, of which the members 16 engage openings 18 in the base 10, and themembers 17 engage openings 19 in the top -the sleeves 14 and 15 and thesaid legs 26 and 27V are provided with spaced lugs 28 and 29 disposed inopposite directions, of

which the lugs 28 project through the sleeve slot 20 and the lugs 29project'through the sleeve slot 21. On each of the sleeves 14 PatentedAug. 22, 1916.

as plainly indicated in Iand 15 are mounted to turn tumblers 30,

preferably two in number, and located one above the other. preferablymade polygonal at its peripheral face and each side of the polygon isprovided vwith an indicating character such as a letter of the alphabet,as shown in Figs. 1 and 6. Each of the tumblers 30 is provided with twoconcentric bores 31 and'32, of which the smaller bore 31 fits thecorresponding sleeve 14 or 15, and the wall of this bore 31 is providedwith a lengthwise extending groove 33 for the passage of the lug or lugs28 of the corresponding shackle leg 26 or 27. The larger bore 32 of eachtumbler accommodates the corresponding lug 28 of the shackle leg 26 or27, so that the tumblers are free to revolve on the sleeves 14 and 15.

In practice the tumblers 30 on one sleeve have different indicatingcharacters. The

top plate 13 is provided with keyholes 40, 41 for the passage of theshackle legs 26, 27

and their lugs 28, 29. When the padlock is in closed position then someor all of the tumblers 30 are in set position, their slots 33 being outof register with the lugs 28 and 29, and consequently the shackle 25cannot be withdrawn as the lugs 28 and 29 abut against the shoulders 34formed between the bores 31 and 32, as will be readily understood byreference to Figs. 3 and 4. When it is desired to open the padlock theperson knowing the combination turns the tumblers until thecorresponding indicating characters appear on the front of the padlock,and when the tumblers are in this position all the slots 33 of theseveral tumblers are in register with the lugs 28'and 29 to allowremoval of the shackle 25 from Athe sleeves 14 and'15 and the tumblers30.

By providing the legs of the shackle with lugs disposed in oppositedirections, it is Each of the tumblersy is evident that a very safeconstruction is provided and it is not easy for an unauthorized personto find the combination by rotating the tumblers. By providing lockingmeans for both legs of the shackle a large number of tumblers can beprovided in a comparatiiely small space, thus insuring the desired sa etl Halving thus described my invention, I claim as new and desire tosecure by Letters Patent 1. A permutation padlock, comprising a framehaving a base' provided at its ends with posts, a top plate attached atits ends to the posts, spaced slotted sleeves arranged between the saidposts and having members at their ends attached to the said base and topplate, a shackle provided on its legs with lugs and adapted to bepressed into the sleeves with the lugs projecting through the slots inthe sleeves, and tumblers mounted to rotate on each sleeve and eachhaving -two concentric Vbores of which the larger one is engaged by theprojecting ends of the lugs and the smaller one is provided in its wallwith a groove adapted to register with the lugs and the slot in thecorresponding sleeve..

2. A permutation lock, comprising 'a frame having a base provided at itsends with integral posts and a top plate attached at its ends to theends of the posts, sleeves j arranged between the said postsl and havingsleeve intermediate the said frame base and the said top plate, eachtumbler having two concentric bores of which the larger one accommodatesthe said lugs and the smaller one is provided in its Wall with a' grooveadapted to register with the lugs of the corresponding shackle leg andthe slot of the corresponding sleeve. n

3. A permutation padlock, comprising a frame having a base provided atits ends with integral posts, a top plate having reduced ends providedwith openings for attachment to the ends of said posts, the said top plate having a keyhole provided with oppositely arranged recesses in itswalls, a slotted sleeve arranged in the framebetween the posts andhaving oppositely arranged attaching members at its ends, the attachingmembers at one end engaging spaced openings in the said base and at theother end engaging the said recesses in the walls of the keyhole in. thetop plate, a shackle having a leg provided with a lug, the leg beingadapted to engage the sleeve with the lug projecting through the slot inthe sleeve, and a tumbler mounted to turn on the said sleeve and havingtwo concentric bores of which the larger one embraces the projecting endof the lug and the smaller one lits the sleeve and has its wallprovidedqwith a lengthwise extending groove, for the passage of theprojecting end of the'lug.

BENJAMIN .SNYDER Witnesses:

SOL Riiisiienirr'r, l SAMUEL W. YOHALEN.

